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<?php
/**
* Clean up wp_head()
*
* Remove unnecessary <link>'s
* Remove inline CSS used by Recent Comments widget
* Remove inline CSS used by posts with galleries
* Remove self-closing tag and change ''s to "'s on rel_canonical()
*/
function roots_head_cleanup() {
// Originally from http://wpengineer.com/1438/wordpress-header/
remove_action('wp_head', 'feed_links', 2);
remove_action('wp_head', 'feed_links_extra', 3);
remove_action('wp_head', 'rsd_link');
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);
remove_action('wp_head', 'wp_generator');
remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);
global $wp_widget_factory;
remove_action('wp_head', array($wp_widget_factory->widgets['WP_Widget_Recent_Comments'], 'recent_comments_style'));
if (!class_exists('WPSEO_Frontend')) {
remove_action('wp_head', 'rel_canonical');
add_action('wp_head', 'roots_rel_canonical');
}
}
function roots_rel_canonical() {
global $wp_the_query;
if (!is_singular()) {
return;
}
if (!$id = $wp_the_query->get_queried_object_id()) {
return;
}
$link = get_permalink($id);
echo "\t<link rel=\"canonical\" href=\"$link\">\n";
}
add_action('init', 'roots_head_cleanup');
/**
* Remove the WordPress version from RSS feeds
*/
add_filter('the_generator', '__return_false');
/**
* Clean up language_attributes() used in <html> tag
*
* Change lang="en-US" to lang="en"
* Remove dir="ltr"
*/
function roots_language_attributes() {
$attributes = array();
$output = '';
if (function_exists('is_rtl')) {
if (is_rtl() == 'rtl') {
$attributes[] = 'dir="rtl"';
}
}
$lang = get_bloginfo('language');
if ($lang && $lang !== 'en-US') {
$attributes[] = "lang=\"$lang\"";
} else {
$attributes[] = 'lang="en"';
}
$output = implode(' ', $attributes);
$output = apply_filters('roots_language_attributes', $output);
return $output;
}
add_filter('language_attributes', 'roots_language_attributes');
/**
* Manage output of wp_title()
*/
function roots_wp_title($title) {
if (is_feed()) {
return $title;
}
$title .= get_bloginfo('name');
return $title;
}
add_filter('wp_title', 'roots_wp_title', 10);
/**
* Clean up output of stylesheet <link> tags
*/
function roots_clean_style_tag($input) {
preg_match_all("!<link rel='stylesheet'\s?(id='[^']+')?\s+href='(.*)' type='text/css' media='(.*)' />!", $input, $matches);
// Only display media if it is meaningful
$media = $matches[3][0] !== '' && $matches[3][0] !== 'all' ? ' media="' . $matches[3][0] . '"' : '';
return '<link rel="stylesheet" href="' . $matches[2][0] . '"' . $media . '>' . "\n";
}
add_filter('style_loader_tag', 'roots_clean_style_tag');
/**
* Add and remove body_class() classes
*/
function roots_body_class($classes) {
// Add post/page slug
if (is_single() || is_page() && !is_front_page()) {
$classes[] = basename(get_permalink());
}
if (!is_front_page()) {
$classes[] = 'not-front';
}
// Remove unnecessary classes
$home_id_class = 'page-id-' . get_option('page_on_front');
$remove_classes = array(
'page-template-default',
$home_id_class
);
$classes = array_diff($classes, $remove_classes);
return $classes;
}
add_filter('body_class', 'roots_body_class');
/**
* Wrap embedded media as suggested by Readability
*
* @link https://gist.github.com/965956
* @link http://www.readability.com/publishers/guidelines#publisher
*/
function roots_embed_wrap($cache, $url, $attr = '', $post_ID = '') {
return '<div class="entry-content-asset">' . $cache . '</div>';
}
add_filter('embed_oembed_html', 'roots_embed_wrap', 10, 4);
/**
* Add Bootstrap thumbnail styling to images with captions
* Use <figure> and <figcaption>
*
* @link http://justintadlock.com/archives/2011/07/01/captions-in-wordpress
*/
function roots_caption($output, $attr, $content) {
if (is_feed()) {
return $output;
}
$defaults = array(
'id' => '',
'align' => 'alignnone',
'width' => '',
'caption' => ''
);
$attr = shortcode_atts($defaults, $attr);
// If the width is less than 1 or there is no caption, return the content wrapped between the [caption] tags
if ($attr['width'] < 1 || empty($attr['caption'])) {
return $content;
}
// Set up the attributes for the caption <figure>
$attributes = (!empty($attr['id']) ? ' id="' . esc_attr($attr['id']) . '"' : '' );
$attributes .= ' class="thumbnail wp-caption ' . esc_attr($attr['align']) . '"';
$attributes .= ' style="width: ' . esc_attr($attr['width']) . 'px"';
$output = '<figure' . $attributes .'>';
$output .= do_shortcode($content);
$output .= '<figcaption class="caption wp-caption-text">' . $attr['caption'] . '</figcaption>';
$output .= '</figure>';
return $output;
}
add_filter('img_caption_shortcode', 'roots_caption', 10, 3);
/**
* Remove unnecessary dashboard widgets
*
* @link http://www.deluxeblogtips.com/2011/01/remove-dashboard-widgets-in-wordpress.html
*/
function roots_remove_dashboard_widgets() {
remove_meta_box('dashboard_incoming_links', 'dashboard', 'normal');
remove_meta_box('dashboard_plugins', 'dashboard', 'normal');
remove_meta_box('dashboard_primary', 'dashboard', 'normal');
remove_meta_box('dashboard_secondary', 'dashboard', 'normal');
}
add_action('admin_init', 'roots_remove_dashboard_widgets');
/**
* Clean up the_excerpt()
*/
function roots_excerpt_length($length) {
return POST_EXCERPT_LENGTH;
}
function roots_excerpt_more($more) {
return ' … <a href="' . get_permalink() . '">' . __('Continued', 'roots') . '</a>';
}
add_filter('excerpt_length', 'roots_excerpt_length');
add_filter('excerpt_more', 'roots_excerpt_more');
/**
* Remove unnecessary self-closing tags
*/
function roots_remove_self_closing_tags($input) {
return str_replace(' />', '>', $input);
}
add_filter('get_avatar', 'roots_remove_self_closing_tags'); // <img />
add_filter('comment_id_fields', 'roots_remove_self_closing_tags'); // <input />
add_filter('post_thumbnail_html', 'roots_remove_self_closing_tags'); // <img />
/**
* Don't return the default description in the RSS feed if it hasn't been changed
*/
function roots_remove_default_description($bloginfo) {
$default_tagline = 'Just another WordPress site';
return ($bloginfo === $default_tagline) ? '' : $bloginfo;
}
add_filter('get_bloginfo_rss', 'roots_remove_default_description');
/**
* Redirects search results from /?s=query to /search/query/, converts %20 to +
*
* @link http://txfx.net/wordpress-plugins/nice-search/
*/
function roots_nice_search_redirect() {
global $wp_rewrite;
if (!isset($wp_rewrite) || !is_object($wp_rewrite) || !$wp_rewrite->using_permalinks()) {
return;
}
$search_base = $wp_rewrite->search_base;
if (is_search() && !is_admin() && strpos($_SERVER['REQUEST_URI'], "/{$search_base}/") === false) {
wp_redirect(home_url("/{$search_base}/" . urlencode(get_query_var('s'))));
exit();
}
}
if (current_theme_supports('nice-search')) {
add_action('template_redirect', 'roots_nice_search_redirect');
}
/**
* Fix for empty search queries redirecting to home page
*
* @link http://wordpress.org/support/topic/blank-search-sends-you-to-the-homepage#post-1772565
* @link http://core.trac.wordpress.org/ticket/11330
*/
function roots_request_filter($query_vars) {
if (isset($_GET['s']) && empty($_GET['s'])) {
$query_vars['s'] = ' ';
}
return $query_vars;
}
add_filter('request', 'roots_request_filter');
/**
* Tell WordPress to use searchform.php from the templates/ directory
*/
function roots_get_search_form($form) {
$form = '';
locate_template('/templates/searchform.php', true, false);
return $form;
}
add_filter('get_search_form', 'roots_get_search_form');
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